Locomotive-furnace door.



H. GREGG. LOGOMOTIVE FURNACE DOOR. APPLICATION FILED 00114, 1912.

HHHH"IIIHHHHHIIM Patented Apr. 8, 1913.

Inve nfion zen of the-United. States, residing at Los nan-Tonnes; pr L08 mamas; CALIFORNIA. LOCOIEQHYEJIZBNAQE D003.

i waste f as rum.

sin ie'rafseuu No. 725,570.

To .all uihom it my concern:

- 1 adapted to Be it known that. LHARRY Gnnoo, a cit'i'-.

use crude oil in a common and well own manner. vided with the door ,way 8 in the rear wall of the boiler which is incased by the door me 9 on which is mounted the furnace he.county of Los Aug v State of California, have invented anew and useful Improvement in Locomotive- Furnace Doors, of which the following is a gated rectangular type with suitable hinges specification. I and a securing latch,-its inner face exposed This invention relates to furnace doors to the action of the heated burning gases, and more partlcularly to doors used on railbeing preferably covered by the fire brick the clog nates ficationg; Figure- 1 is a central ljseetlon through th boilers or other boilers where oil of a crude of the heated products which a boiler tubes.

road ocomotives,.and the principal object 11 of the invention is to provide a door with- 'table means for admitting sand there.- through into the furnace chamber.

It 1s a further object to provide a furnace securedthereto by suitable bolts 12 passed ably'counter sunkin the fire brick. T e door is usually cast of metal, and is thus shown, provided with a hopper 14 of the usual hopper form, and of suiiicient capacity .to carry the amount of sand neces for one treatment of the boiler tubes. hopper, and the other providmg a draft at lower convergedend 15 of the hopper all times in the operation of the invention.

n the drawings accompanyinig this speciongitudinal e rear end of a locomotive dear, and its rnace, showing the inven-; tion applied thereto and in generaloperation. Fig. 2 isan enlarged front elevation of the door shown in closed position on its supporting bracket. Fig. 3 is a cross section on the line 3-3 of Fig. 2, looking in the direction of the arrows.

Heretofore in the operation of locomotive in the fire brick 11.

1n the firebrick, ably inclined in an upward direction, and of character is used as el, any --condensation or incomplete comin the tubes of the boiler results in and to clean out the tubes occurs, sand has an used and thrown into the furnace, by the draft into and through the tubes to clean the latter. This method of introducing the sand has resulted in unequal distribution of the latter resulting in inefiiciency in the object desired to be obtained, and "this invention overcomes the above by supplying means to more equitably distribute the sand in relation to the the tubes, a quantity bustion' of the same,

ng1 v ordinary operation of the locomotive prow enth'is latter he projection of the fuel there through, and the draft through the bore 18, will carry the sand in an evenly distributed spray across the furnace, and more efliciently reach all the tubes of the boiler which it is desired to clean. This invention only temporarily obstructs the draft opening 'of which it forms a component part, and results in economy, convenience and efliciency in the sanding process.

at I claim is:

furnace door construction, comprising a frame, a door suitably mounted in said frame providedwith a plurality of inclined apertures, a lining More specifically in the drawings, 5 desigthe rear portion of a locomotive boiler having a furnace *6, to the lower art of which the burner 7 "is mounted, w ich is This furnace 'is prodoor 10. This door isof the general elonthrough the metal of the door and prefr- .Below the hopper is a second aperture in converging inwardly," this aperture 17 registering with a bore 18 this latter being prefer the hopper, and the draft occasioned in the for said door provided Q 1,0aaaaa with apertures registering with said aper- In witness that I claim the foregoing I tures in said door, and a hopper commun ihave hereunto subscribed my name this 7th eating with the uppermost of said apertures, day-of Oct, 1912.

whereby communication is afiorded through HARRY GREGG. I said door for sandin said hopper and air Witnesses:

through the other aperture to commingle M. BA'I'IEY,

within the furnace. EAaLE B. POLLARD. 

